Ok, my next stab might be something like: something different between our ATMEGA's, like maybe a different generation of boot loader software, some memory management issue. I've tried it on two different Duino's bought weeks apart, so that doesn't seem very likely..
But, I'm willing to consider other options, as well.
What about your coding IDE? What platform are you using? I'm using v0011 on Ubuntu 8.04. Even though it's supposed to be the same, might there be a difference in the bytecode generated?
I haven't ruled out my proto board, either. Tonight I'll try running the Duino on just the board itself, no peripherals and just trigger the left switch and watch the trace.
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